1) in this scenario - you are in charge of establishing a fully-functional, microbiology diagnostic laboratory. Describe the issues you need to consider and the processes you would need to put in place. This will need to include: an overarching aim of the laboratory, regulations to ensure you adhere to quality assurance measures and then there is a framework of the procedures.

Mr. Mark is a 42 year male of African origin. He has a demanding desk-based job and frequently has to work long hours. He rarely eats regular meals and so has developed a habit of snacking on foods with high salt, fat and sugar contents. He routinely drinks at least 4 cups of coffee a day and at least one bottle of coca cola. Recently he has noticed that he has put on weight and easily gets out of breath when walking, he feels tired on waking, often suffers muscular aches and pains and experiences bouts of anxiety over his workload.

Using four of the systems from the list below, explain what steps Mr. Mark should take to improve his overall physical and mental health. Include in your answer how the body systems you have selected work together to normalize body functions. Include homeostasis. 500 words Human body systems

• The endocrine system

• The nervous system

• The cardiovascular system

• The respiratory system

Question 1:

Why is it important to provide detailed information about the methods used in an experiment?

Question 2:

Convert 0.75 lb to mg?

For the calculation show all the steps in the calculation and final answer.

What are the different forms of extracellular signaling

Mitosis and Meiosis True/ False:

True or false?

1. The centromeres of metacentric chromosomes are located toward one end of the chromosome.

2. The attachment point on the chromosome for spindle microtubules is on the Telomere.

3. In the metaphase of mitosis, the number of chromosomes per cell is doubled compared to the interphase cell.

4. Mitosis occurs in somatic (nonsex) cells; Meiosis occurs in sex cells to produce gametes.

5. Cells with half the total chromosome number are called haploid.

6. Crossing over (genetic recombination) occurs between sister chromatids of the same chromosome.

7. Crossing over between chromatids of homologous chromosomes occurs in meiosis prohase II.

8. Meiosis results in only one member of each chromosome pair in the nucleus of the cell.

9. Humans have 46 chromosomes. In the cell during metaphase I of meiosis, the chromosome number is 23.

10. Mitosis produces daughter cells with identical genetic materials; meiosis produces four daughter cells with different genetic materials.

11. Chromosomes are randomly partitioned during Meisosi I anaphase, contributing to genetic diversity.

12. If a pollen mother cell has 3 pairs of homologous chromosomes, after meiosis, there will be 8 different combinations of chromosomes in the gametes.

1. Did you find similarities among the different bacterial cultures colony morphology?

2. What are some other ways to differentiate bacteria, if the the colony morphology is similar?

12. In simple diffusion a solute

A. Is propelled by random molecular motion

B. Moves up its concentration gradient

C. Moves across a membrane because of an input of free energy.

D. Both A and B are correct

E. All of the above are correct

16. Lipolysis is used to

A. Degrade triacylglycerols

B. Prepare triacylglycerols for excretion

C. Remove lipid from membrane

D. Cleave fatty acids into two carbon units

E. Convert fatty acids to glucose

19. The myelin sheath

A. Surrounds nerve cell axons

B. Contains large amounts of cardiolipin

C. Facilitates nerve impulse transmission

D. Both A and B are correct

E. Both A and C are correct

20. Membrane proteins are linked to anchor molecules through a ___________ link

A. Ether

B. Ester

C. Amide

D. Amino

E. Plasma

22. Patients with familial hypercholesterolemia

A. Possess depressed levels of plasma cholesterol

B. Have missing or defective LDL receptors

C. Are homozygous or heterozygous for a nonfunctional LDL receptor gene

D. Have very high levels of serum cholesterol

E. B, C and D are correct

3.

Which of the following microscopes would you use if you wanted to observe a living

Paramecium

from a drop of pond water?

a. compound light microscope

b. confocal microscope

c. stereo (dissecting) light microscope

d. scanning electron microscope

e. transmission electron microscope

4. Which of the following microscopes would you use if you wanted to observe a cross

section of an organelle such as a Golgi apparatus (the image would be black and white)?

a. compound light microscope

b. confocal microscope

c. stereo (dissecting) light microscope

d. scanning electron microscope

e. transmission electron microscope

5. Which of the following microscopes primarily uses a computer and laser to make three-dimensional images of a specimen?

a. compound light microscope

b. confocal microscope

c. stereo (dissecting) light microscope

d. scanning electron microscope

e. transmission electron microscope

6. Which of the following microscopes would you use if you wanted to observe the eye of a squid?

a. compound light microscope

b. confocal microscope

c. stereo (dissecting) light microscope

d. scanning electron microscope

e. transmission electron microscope

7. Which of the following microscopes would you use if you wanted to see fine detail on the surface of a pollen grain (the image would be black and white)?

a. compound light microscope

b. confocal microscope

c. stereo (dissecting) light microscope

d. scanning electron microscope

e. transmission electron microscope

8. You are using an electron microscope to view a cell that does not have organelles, does have DNA, a cell wall (composed of polysaccharides and proteins), cell membrane, cytoplasm and ribosomes. This type of cell can often be found in extreme environments. You are viewing a member of…

a. Kingdom Fungi

b. the protists

c. Kingdom Plantae

d. Kingdom Animalia

e. Domain Bacteria

f. Domain Archaea

9. You are using a compound light microscope to view a unicellular organism that does have organelles and is moving via pseudopodia. You are viewing a member of…

a. Kingdom Fungi

b. the protists

c. Kingdom Plantae

d. Kingdom Animalia

e. Domain Bacteria

f. Domain Archaea

2. Energy requiring transport mechanisms include

A. Primary active transport

B. Diffusion

C. Facilitated diffusion

D. Both A and B are correct

E. Both A and C are correct

3. The fixation of nitrogen requires _______.

A. Fe-Mo protein

B. Fe protein

C. Ferredoxin

D. Both A and B are correct

E. All of the above are correct

4. Membranes are rigid when they contain

A. Large amounts of cholesterol

B. Large amounts of unsaturated fatty acids

C. Large amounts of saturated fatty acids

D. Large amounts of water

E. A and B

5. Membrane remodeling

A. Requires phospholipases

B. Requires acyl transferases

C. Occurs only when cells are under stress

D. Both A and B are correct

E. All of the above are correct

7. Which of the following is not a function of lipids

A. Energy storage

B. Components of biological membranes

C. Insulation

D. Source of acetyl-CoA

E. All of the above are functions of lipids

What do we know now about the link between human diseases and gene mutations.

Thinking ahead to the remaining topics, what happens to histones bound to eukaryotic chromosomes before and during DNA replication and transcription?

Two purple sea slugs are mated with each other. Among their numerous offspring, 428 have a purple integument and 152 have orange integuments. With a chi-square test, compare the observed numbers with a 3:1 ratio and determine if the difference between observed and expected could be a result of chance.